Import DXF and make it fit work area
Check scale, center geometry to origin, shift+C, clipping planes...

When importing DXF there are a few options to work with.



One is the scale. The default settings is scale = 1, wich obiuvsly means that Blender will multiply by this factor the incoming units of the DXF.

So if you had drawn with your vectorial software a square of 2mx2m, blender will import an object of 2unitsx2units.

If you were working in cm, your square shall measure 200. If in blender you are going to work in meters, you must put a 0.01 factor...

This is valid also for the location of objects. So it is important to consider also the relative distance of the square from the origin of the sistem. To avoid problems, if Is possible, I would suggest to move the geometry to the origin in your drawing software.

Another tool that may come useful is Shift+C



It will extend your view till all visible objects are in the 3d view. If it seem that the camera de-zoom too far away, there are probably objects much distant from the origin. Notice that they might come outside of the 3D camera's clipping planes, making them invisible.